[Talk-lv] Updating rivers (Martin Machyna)

Martin Machyna machyna at gmail.com
Wed Oct 20 17:58:09 UTC 2021


Hi Vladislav,
thanks for the links. For some reason MacOS/chrome refuses to download the
zip file because of unsecure connection so I couldn't check. But if there
are river areas I could potentially use some to fix existing low quality
riverbanks or fill in small gaps.

Cheers
Martin


On Tue, Oct 19, 2021 at 8:51 AM Vladislav Kugelevich via Talk-lv <
talk-lv at openstreetmap.org> wrote:

> Hi
> I'm all for it. BTW, we have map data from Latvian Geospatial Agency for
> Latvia. It is CC0 licensed and can be used freely, but it is a bit
> outdated, as it is from approx. years 2000-2010.
>
> It may be somehow useful in your work. I extracted rivers, and converted
> data to OSM format and published here:
> http://muzprosvet.ru/temp/Topo50_v2%20river.geojson.zip
>
> Source and confirmation data is CC0:
> https://www.lgia.gov.lv/lv/topografiska-karte-meroga-150-000-2-izdevums-0
>
> Files are big, so let me know if you need me to split them or anything
> else.
> Thanks
>
> On Tue, Oct 19, 2021 at 2:11 PM <talk-lv-request at openstreetmap.org> wrote:
>
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>>    1. Updating rivers (Martin Machyna)
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>> Message: 1
>> Date: Mon, 18 Oct 2021 10:47:38 -0400
>> From: Martin Machyna <machyna at gmail.com>
>> To: talk-lv at openstreetmap.org
>> Subject: [Talk-lv] Updating rivers
>> Message-ID:
>>         <
>> CAG8bT+RNcZp5anFUABuR15SCtLovZucUo1GvRxcJ8p43+uZwqA at mail.gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello,
>>
>> I am participating in a project that is trying to clean up and update
>> river
>> data globally and was thinking of looking at Latvia next. In short, we
>> look
>> to fix errors like  disconnected waterways, overlapping water areas or
>> waterways, correcting multipolygons, fixing mistagged features, removing
>> duplicate objects and also moving older river tags (waterway=riverbank) to
>> the newer more numerous version natural=water + water=river.
>>
>> More details about the process is summarized on this wiki page:
>>
>> https://wiki.openstreetmap.org/wiki/WikiProject_Waterways/River_modernization
>>
>> Let me know your thoughts.
>>
>> Martin
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